First Details and Promo Art for the ‘Supergirl’/’Flash’ Crossover

Warner Bros. has unveiled a first look at the hotly anticipated Supergirl/Flash crossover, which features a classic comic book cover featuring the two heroes and the cast of Supergirl along with the tagline: “Who is the fastest person alive? Read…”The Race Between Supergirl & The Flash!”

On the Mar. 28 episode, titled “World’s Finest,” The Flash makes his way over to Supergirl and National City where the two famous superheroes will team up to battle Silver Banshee and Livewire.

The official synopsis provides details about these two universes that have been crafted for the small screen confirming that both the “Arrowverse” (which consists of Arrow, The Flash, and DC’s Legends of Tomorrow) and Supergirl are alternate universes. That surely explains why it’s Grant Gustin’s The Flash making his way over to Supergirl with the introduction of Earth-2 this season.


Here are the details for “World’s Finest”:

“Worlds Finest” – Kara gains a new ally when the lightning-fast superhero The Flash (Grant Gustin) suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home, on SUPERGIRL, Monday, March 28 (8:00-9:00 PM) on the CBS Television Network. Grant Gustin crosses over as The Flash.

The crossover airs on Supergirl on March 28 at 8/7c on CBS.

Alyssa Barbieri

Senior Managing Editor

Teacher by day, writer by every other free moment. Obsessed with sports, TV, books, movies, and superheroes. Proud shipper and supporter of strong female characters. TV Editor and Sports Editor. I write about DCTV, This Is Us and so much more. Contact: